Skip to contentSkip to conversation

Add the Lantiq PEF2256 audio support

PATCH Superseded Herve Codina 3 participants 18 messages Mar 15, 2023 – Mar 16, 2023

Subsystems (4)
Device tree bindings Sound ASoC Char and misc drivers

v1 of 6 Superseded Latest is v6 →

lore
Share & tools
lore

Herve Codina

author
#0 lore raw

cover Add the Lantiq PEF2256 audio support

Hi,

This series adds support for audio using the Lantiq PEF2256 framer.

The Lantiq PEF2256 is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

The first part of this series (patches 1 to 4) adds the Lantiq PEF2256 driver core.
The second part (patches 5 to 7) adds the audio support using the Lantiq PEF2256 driver core.

The consumer/provider relation between the codec and the driver core allows to use the PEF2256 framer for other purpose than audio support.

Best regards,
Herve Codina

Herve Codina (7):
dt-bindings: misc: Add the Lantiq PEF2466 E1/T1/J1 framer
drivers: misc: Add support for the Lantiq PEF2256 framer
Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry
MAINTAINERS: Add the Lantiq PEF2256 driver entry
dt-bindings: sound: Add support for the Lantiq PEF2256 codec
ASoC: codecs: Add support for the Lantiq PEF2256 codec
MAINTAINERS: Add the Lantiq PEF2256 ASoC codec entry

 .../sysfs-bus-platform-devices-pef2256        |   10 +
 .../bindings/misc/lantiq,pef2256.yaml         |  190 +++
 .../bindings/sound/lantiq,pef2256-codec.yaml  |   57 +
 MAINTAINERS                                   |   15 +
 drivers/misc/Kconfig                          |   16 +
 drivers/misc/Makefile                         |    1 +
 drivers/misc/pef2256.c                        | 1441 +++++++++++++++++
 include/linux/pef2256.h                       |   36 +
 sound/soc/codecs/Kconfig                      |   14 +
 sound/soc/codecs/Makefile                     |    2 +
 sound/soc/codecs/pef2256-codec.c              |  395 +++++
 11 files changed, 2177 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
 create mode 100644 Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml
 create mode 100644 Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
 create mode 100644 drivers/misc/pef2256.c
 create mode 100644 include/linux/pef2256.h
 create mode 100644 sound/soc/codecs/pef2256-codec.c
Signature · 1 line
2.39.2
author
#1 lore raw

PATCH 1/7 dt-bindings: misc: Add the Lantiq PEF2466 E1/T1/J1 framer

The Lantiq PEF2256 is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

Signed-off-by Herve Codina <[email protected]>
---
 .../bindings/misc/lantiq,pef2256.yaml         | 190 ++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml
Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml new file +190 -0
new file mode 100644
index 000000000000..1ba788d06a14
@@ -0,0 +1,190 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/lantiq,pef2256.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq PEF2256
+
+maintainers:
+  - Herve Codina <[email protected]>
+
+description:
+  The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and
+  line interface component designed to fulfill all required interfacing between
+  an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.
+
+properties:
+  compatible:
+    const: lantiq,pef2256
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Master clock
+
+  clock-names:
+    items:
+      - const: mclk
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      GPIO used to reset the device.
+    maxItems: 1
+
+  pinctrl:
+    allOf:
+      - $ref: "/schemas/pinctrl/pinctrl.yaml#"
+
+    patternProperties:
+      '-pins$':
+        type: object
+        allOf:
+          - $ref: "/schemas/pinctrl/pincfg-node.yaml#"
+
+        properties:
+          pins:
+            enum: [ RPA, RPB, RPC, RPD, XPA, XPB, XPC, XPD ]
+
+          function:
+            enum: [ SYPR, RFM, RFMB, RSIGM, RSIG, DLR, FREEZE, RFSP, LOS,
+                    SYPX, XFMS, XSIG, TCLK, XMFB, XSIGM, DLX, XCLK, XLT,
+                    GPI, GPOH, GPOL ]
+
+        required:
+          - pins
+          - function
+
+  lantiq,line-interface:
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [e1, t1j1]
+    default: e1
+    description: |
+      The line interface type
+        - e1: E1 line
+        - t1j1: T1/J1 line
+
+  lantiq,sysclk-rate-hz:
+    enum: [2048000, 4096000, 8192000, 16384000]
+    default: 2048000
+    description:
+      Clock rate (Hz) on the system highway.
+
+  lantiq,data-rate-bps:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [2048000, 4096000, 8192000, 16384000]
+    default: 2048000
+    description:
+      Data rate (bit per seconds) on the system highway.
+
+  lantiq,clock-falling-edge:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Data is sent on falling edge of the clock (and received on the rising
+      edge). If 'clock-falling-edge' is not present, data is sent on the
+      rising edge (and received on the falling edge).
+
+  lantiq,channel-phase:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3, 4, 5, 6, 7]
+    default: 0
+    description:
+      The pef2256 delivers a full frame (32 8bit time-slots in E1 and 24 8bit
+      time-slots 8 8bit signaling in E1/J1) every 125us. This lead to a data
+      rate of 2048000 bit/s. When lantiq,data-rate-bps is more than 2048000
+      bit/s, the data (all 32 8bit) present in the frame are interleave with
+      unused time-slots. The lantiq,channel-phase property allows to set the
+      correct alignment of the interleave mechanism.
+      For instance, suppose lantiq,data-rate-bps = 8192000 (ie 4*2048000), and
+      lantiq,channel-phase = 2, the interleave schema with unused time-slots
+      (nu) and used time-slots (XX) for TSi is
+        nu nu XX nu nu nu XX nu nu nu XX nu
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+      With lantiq,data-rate-bps = 8192000, and lantiq,channel-phase = 1, the
+      interleave schema is
+        nu XX nu nu nu XX nu nu nu XX nu nu
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+      With lantiq,data-rate-bps = 4096000 (ie 2*2048000), and
+      lantiq,channel-phase = 1, the interleave schema is
+        nu    XX    nu    XX    nu    XX
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+
+  lantiq,subordinate:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      If present, the pef2256 works in subordinate mode. In this mode it
+      synchronizes on line interface clock signals. Otherwise, it synchronizes
+      on internal clocks.
+
+allOf:
+  - if:
+      properties:
+        lantiq,line-interface:
+          contains:
+            const: e1
+    then:
+      properties:
+        lantiq,frame-format:
+          $ref: /schemas/types.yaml#/definitions/string
+          enum: [doubleframe, crc4-multiframe, auto-multiframe]
+          default: doubleframe
+          description: |
+            The E1 line interface frame format
+              - doubleframe: Doubleframe format
+              - crc4-multiframe: CRC4 multiframe format
+              - auto-multiframe: CRC4 multiframe format with interworking
+                                 capabilities (ITU-T G.706 Annex B)
+
+    else:
+      # T1/J1 line
+      properties:
+        lantiq,frame-format:
+          $ref: /schemas/types.yaml#/definitions/string
+          enum: [4frame, 12frame, 24frame, 72frame]
+          default: 12frame
+          description: |
+            The T1/J1 line interface frame format
+              - 4frame: 4-frame multiframe format (F4)
+              - 12frame: 12-frame multiframe format (F12, D3/4)
+              - 24frame: 24-frame multiframe format (ESF)
+              - 72frame: 72-frame multiframe format (F72, remote switch mode)
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    pef2256@2000000 {
+      compatible = "lantiq,pef2256";
+      reg = <0x2000000 0xFF>;
+      interrupts = <8 1>;
+      interrupt-parent = <&PIC>;
+      clocks = <&clk_mclk>;
+      clock-names = "mclk";
+      reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+      lantiq,sysclk-rate-hz = <8192000>;
+      lantiq,data-rate-bps = <4096000>;
+
+      pinctrl {
+        pef2256_rpa_sypr: rpa-pins {
+          pins = "RPA";
+          function = "SYPR";
+        };
+        pef2256_xpa_sypx: xpa-pins {
+          pins = "XPA";
+          function = "SYPX";
+        };
+      };
+    };
Signature · 1 line
2.39.2
author
#2 lore raw

PATCH 2/7 drivers: misc: Add support for the Lantiq PEF2256 framer

In reply to Herve Codina

The Lantiq PEF2256 is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

Signed-off-by Herve Codina <[email protected]>
---
 drivers/misc/Kconfig    |   16 +
 drivers/misc/Makefile   |    1 +
 drivers/misc/pef2256.c  | 1441 +++++++++++++++++++++++++++++++++++++++
 include/linux/pef2256.h |   36 +
 4 files changed, 1494 insertions(+)
 create mode 100644 drivers/misc/pef2256.c
 create mode 100644 include/linux/pef2256.h
drivers/misc/Kconfig +16 -0
index 433aa4197785..b64f9435a51b 100644
@@ -376,6 +376,22 @@ config HMC6352
 	  This driver provides support for the Honeywell HMC6352 compass,
 	  providing configuration and heading data via sysfs.
 
+config PEF2256
+	tristate "Lantiq PEF2256 (FALC56) framer"
+	select PINCTRL
+	select PINMUX
+	select GENERIC_PINCONF
+	help
+	  This option enables support for the Lantiq PEF2256 framer, also known
+	  as FALC56. This framer and its line interface component is designed
+	  to fulfill all required interfacing between analog E1/T1/J1 lines and
+	  the digital PCM system highway.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pef2256.
+
 config DS1682
 	tristate "Dallas DS1682 Total Elapsed Time Recorder with Alarm"
 	depends on I2C
drivers/misc/Makefile +1 -0
index 56de43943cd5..a26f044ab9dd 100644
@@ -35,6 +35,7 @@ obj-$(CONFIG_SENSORS_TSL2550)	+= tsl2550.o
 obj-$(CONFIG_DS1682)		+= ds1682.o
 obj-$(CONFIG_C2PORT)		+= c2port/
 obj-$(CONFIG_HMC6352)		+= hmc6352.o
+obj-$(CONFIG_PEF2256)		+= pef2256.o
 obj-y				+= eeprom/
 obj-y				+= cb710/
 obj-$(CONFIG_VMWARE_BALLOON)	+= vmw_balloon.o
drivers/misc/pef2256.c new file +1441 -0

1,441 lines not on this page · raw message

include/linux/pef2256.h new file +36 -0
new file mode 100644
index 000000000000..6c8d173595b1
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * PEF2256 management
+ *
+ * Copyright 2023 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+#ifndef __PEF2256_H__
+#define __PEF2256_H__
+
+#include <linux/types.h>
+
+struct pef2256;
+struct device_node;
+struct device;
+struct notifier_block;
+
+struct pef2256 *pef2256_get_byphandle(struct device_node *np, const char *phandle_name);
+void pef2256_put(struct pef2256 *pef2256);
+struct pef2256 *devm_pef2256_get_byphandle(struct device *dev, struct device_node *np,
+					   const char *phandle_name);
+
+
+enum pef2256_event {
+	PEF2256_EVENT_CARRIER, /* Carrier state changed */
+};
+
+/* The nb.notifier_call function registered must not sleep */
+int pef2256_register_event_notifier(struct pef2256 *pef2256, struct notifier_block *nb);
+int pef2256_unregister_event_notifier(struct pef2256 *pef2256, struct notifier_block *nb);
+
+/* Retrieve carrier state. true: carrier on, false: carrier off */
+bool pef2256_get_carrier(struct pef2256 *pef2256);
+
+#endif /* __PEF2256_H__ */
Signature · 1 line
2.39.2
author
#3 lore raw

PATCH 3/7 Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

In reply to Herve Codina

Document the "subordinate" sysfs attribute exposed by the pef2256 driver.

Signed-off-by Herve Codina <[email protected]>
---
 .../ABI/testing/sysfs-bus-platform-devices-pef2256     | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256 new file +10 -0
new file mode 100644
index 000000000000..b2343b3b6e84
@@ -0,0 +1,10 @@
+What:		/sys/bus/platform/devices/*.pef2256/subordinate
+KernelVersion:	6.4
+Contact:	Herve Codina <[email protected]>
+Description:
+		(RW) Controls whether the PEF2256 works as subordinate or main
+		device mode.
+		  - 0 : main device mode
+		  - 1 : subordinate mode
+		In subordinate device mode it synchronizes on line interface
+		clock signals. Otherwise, it synchronizes on internal clocks.
Signature · 1 line
2.39.2
author
#4 lore raw

PATCH 4/7 MAINTAINERS: Add the Lantiq PEF2256 driver entry

In reply to Herve Codina

After contributing the driver, add myself as the maintainer for the Lantiq PEF2256 driver.

Signed-off-by Herve Codina <[email protected]>
---
 MAINTAINERS | 8 ++++++++
 1 file changed, 8 insertions(+)
MAINTAINERS +8 -0
index fcb69242cd19..b258498aa8ac 100644
@@ -11651,6 +11651,14 @@ S:	Maintained
 F:	arch/mips/lantiq
 F:	drivers/soc/lantiq
 
+LANTIQ PEF2256 DRIVER
+M:	Herve Codina <[email protected]>
+S:	Maintained
+F:	Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
+F:	Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml
+F:	drivers/misc/pef2256.c
+F:	include/linux/pef2256.h
+
 LASI 53c700 driver for PARISC
 M:	"James E.J. Bottomley" <[email protected]>
 L:	[email protected]
Signature · 1 line
2.39.2
author
#5 lore raw

PATCH 5/7 dt-bindings: sound: Add support for the Lantiq PEF2256 codec

In reply to Herve Codina

The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

The codec support allows to use some of the PCM system highway time-slots as audio channels to transport audio data over the E1/T1/J1 lines.

Signed-off-by Herve Codina <[email protected]>
---
 .../bindings/sound/lantiq,pef2256-codec.yaml  | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml new file +57 -0
new file mode 100644
index 000000000000..acba3a0ccd1b
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/lantiq,pef2256-codec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq PEF2256 codec device
+
+maintainers:
+  - Herve Codina <[email protected]>
+
+description: |
+  Codec support for PEF2256.
+
+  The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and
+  line interface component designed to fulfill all required interfacing between
+  an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.
+
+  The codec support allows to use some of the PCM system highway time-slots as
+  audio channels to transport audio data over the E1/T1/J1 lines.
+
+  The time-slots used by the codec must be set and so, the properties
+  'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and
+  'dai-tdm-slot-rx-mask' must be present in the ALSA sound card node for
+  sub-nodes that involve the codec. The codec uses 8bit time-slots.
+  'dai-tdm-tdm-slot-with' must be set to 8.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: lantiq,pef2256-codec
+
+  lantiq,pef2256:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandle to the PEF2256
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - lantiq,pef2256
+  - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    audio-codec {
+        compatible = "lantiq,pef2256-codec";
+        lantiq,pef2256 = <&pef2256>;
+        #sound-dai-cells = <0>;
+    };
Signature · 1 line
2.39.2
author
#6 lore raw

PATCH 6/7 ASoC: codecs: Add support for the Lantiq PEF2256 codec

In reply to Herve Codina

The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

The codec support allows to use some of the PCM system highway time-slots as audio channels to transport audio data over the E1/T1/J1 lines. It provides also line carrier detection events reported through the ALSA jack detection feature.

Signed-off-by Herve Codina <[email protected]>
---
 sound/soc/codecs/Kconfig         |  14 ++
 sound/soc/codecs/Makefile        |   2 +
 sound/soc/codecs/pef2256-codec.c | 395 +++++++++++++++++++++++++++++++
 3 files changed, 411 insertions(+)
 create mode 100644 sound/soc/codecs/pef2256-codec.c
sound/soc/codecs/Kconfig +14 -0
index 0be061953e9a..bec4f9200072 100644
@@ -168,6 +168,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_PCM512x_I2C
 	imply SND_SOC_PCM512x_SPI
 	imply SND_SOC_PEB2466
+	imply SND_SOC_PEF2256
 	imply SND_SOC_RK3328
 	imply SND_SOC_RK817
 	imply SND_SOC_RT274

@@ -1252,6 +1253,19 @@ config SND_SOC_PEB2466
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-soc-peb2466.
 
+config SND_SOC_PEF2256
+	tristate "Lantiq PEF2256 codec"
+	depends on PEF2256
+	help
+	  Enable support for the Lantiq PEF2256 (FALC56) codec.
+	  The PEF2256 is a framer and line interface between analog E1/T1/J1
+	  line and a digital PCM bus.
+	  This codec allows to use some of the time slots available on the
+	  PEF2256 PCM bus to transport some audio data.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-soc-pef2256.
+
 config SND_SOC_RK3328
 	tristate "Rockchip RK3328 audio CODEC"
 	select REGMAP_MMIO
sound/soc/codecs/Makefile +2 -0
index 20b388b77f1f..11bd66d46f7b 100644
@@ -188,6 +188,7 @@ snd-soc-pcm512x-objs := pcm512x.o
 snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o
 snd-soc-pcm512x-spi-objs := pcm512x-spi.o
 snd-soc-peb2466-objs := peb2466.o
+snd-soc-pef2256-objs := pef2256-codec.o
 snd-soc-rk3328-objs := rk3328_codec.o
 snd-soc-rk817-objs := rk817_codec.o
 snd-soc-rl6231-objs := rl6231.o

@@ -551,6 +552,7 @@ obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
 obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o
 obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
 obj-$(CONFIG_SND_SOC_PEB2466)	+= snd-soc-peb2466.o
+obj-$(CONFIG_SND_SOC_PEF2256)	+= snd-soc-pef2256.o
 obj-$(CONFIG_SND_SOC_RK3328)	+= snd-soc-rk3328.o
 obj-$(CONFIG_SND_SOC_RK817)	+= snd-soc-rk817.o
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
sound/soc/codecs/pef2256-codec.c new file +395 -0

395 lines not on this page · raw message

Signature · 1 line
2.39.2
author
#7 lore raw

PATCH 7/7 MAINTAINERS: Add the Lantiq PEF2256 ASoC codec entry

In reply to Herve Codina

After contributing the codec, add myself as the maintainer for the Lantiq PEF2256 codec.

Signed-off-by Herve Codina <[email protected]>
---
 MAINTAINERS | 7 +++++++
 1 file changed, 7 insertions(+)
MAINTAINERS +7 -0
index b258498aa8ac..81c17580b402 100644
@@ -11651,6 +11651,13 @@ S:	Maintained
 F:	arch/mips/lantiq
 F:	drivers/soc/lantiq
 
+LANTIQ PEF2256 ASoC CODEC
+M:	Herve Codina <[email protected]>
+L:	[email protected] (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
+F:	sound/soc/codecs/pef2256-codec.c
+
 LANTIQ PEF2256 DRIVER
 M:	Herve Codina <[email protected]>
 S:	Maintained
Signature · 1 line
2.39.2
#8 lore raw

PATCH 1/7 dt-bindings: misc: Add the Lantiq PEF2466 E1/T1/J1 framer

In reply to Herve Codina

The Lantiq PEF2256 is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

Signed-off-by Herve Codina <[email protected]>
---
 .../bindings/misc/lantiq,pef2256.yaml         | 190 ++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml
Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml new file +190 -0
new file mode 100644
index 000000000000..1ba788d06a14
@@ -0,0 +1,190 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/lantiq,pef2256.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq PEF2256
+
+maintainers:
+  - Herve Codina <[email protected]>
+
+description:
+  The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and
+  line interface component designed to fulfill all required interfacing between
+  an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.
+
+properties:
+  compatible:
+    const: lantiq,pef2256
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Master clock
+
+  clock-names:
+    items:
+      - const: mclk
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      GPIO used to reset the device.
+    maxItems: 1
+
+  pinctrl:
+    allOf:
+      - $ref: "/schemas/pinctrl/pinctrl.yaml#"
+
+    patternProperties:
+      '-pins$':
+        type: object
+        allOf:
+          - $ref: "/schemas/pinctrl/pincfg-node.yaml#"
+
+        properties:
+          pins:
+            enum: [ RPA, RPB, RPC, RPD, XPA, XPB, XPC, XPD ]
+
+          function:
+            enum: [ SYPR, RFM, RFMB, RSIGM, RSIG, DLR, FREEZE, RFSP, LOS,
+                    SYPX, XFMS, XSIG, TCLK, XMFB, XSIGM, DLX, XCLK, XLT,
+                    GPI, GPOH, GPOL ]
+
+        required:
+          - pins
+          - function
+
+  lantiq,line-interface:
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [e1, t1j1]
+    default: e1
+    description: |
+      The line interface type
+        - e1: E1 line
+        - t1j1: T1/J1 line
+
+  lantiq,sysclk-rate-hz:
+    enum: [2048000, 4096000, 8192000, 16384000]
+    default: 2048000
+    description:
+      Clock rate (Hz) on the system highway.
+
+  lantiq,data-rate-bps:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [2048000, 4096000, 8192000, 16384000]
+    default: 2048000
+    description:
+      Data rate (bit per seconds) on the system highway.
+
+  lantiq,clock-falling-edge:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Data is sent on falling edge of the clock (and received on the rising
+      edge). If 'clock-falling-edge' is not present, data is sent on the
+      rising edge (and received on the falling edge).
+
+  lantiq,channel-phase:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3, 4, 5, 6, 7]
+    default: 0
+    description:
+      The pef2256 delivers a full frame (32 8bit time-slots in E1 and 24 8bit
+      time-slots 8 8bit signaling in E1/J1) every 125us. This lead to a data
+      rate of 2048000 bit/s. When lantiq,data-rate-bps is more than 2048000
+      bit/s, the data (all 32 8bit) present in the frame are interleave with
+      unused time-slots. The lantiq,channel-phase property allows to set the
+      correct alignment of the interleave mechanism.
+      For instance, suppose lantiq,data-rate-bps = 8192000 (ie 4*2048000), and
+      lantiq,channel-phase = 2, the interleave schema with unused time-slots
+      (nu) and used time-slots (XX) for TSi is
+        nu nu XX nu nu nu XX nu nu nu XX nu
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+      With lantiq,data-rate-bps = 8192000, and lantiq,channel-phase = 1, the
+      interleave schema is
+        nu XX nu nu nu XX nu nu nu XX nu nu
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+      With lantiq,data-rate-bps = 4096000 (ie 2*2048000), and
+      lantiq,channel-phase = 1, the interleave schema is
+        nu    XX    nu    XX    nu    XX
+        <-- TSi --> <- TSi+1 -> <- TSi+2 ->
+
+  lantiq,subordinate:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      If present, the pef2256 works in subordinate mode. In this mode it
+      synchronizes on line interface clock signals. Otherwise, it synchronizes
+      on internal clocks.
+
+allOf:
+  - if:
+      properties:
+        lantiq,line-interface:
+          contains:
+            const: e1
+    then:
+      properties:
+        lantiq,frame-format:
+          $ref: /schemas/types.yaml#/definitions/string
+          enum: [doubleframe, crc4-multiframe, auto-multiframe]
+          default: doubleframe
+          description: |
+            The E1 line interface frame format
+              - doubleframe: Doubleframe format
+              - crc4-multiframe: CRC4 multiframe format
+              - auto-multiframe: CRC4 multiframe format with interworking
+                                 capabilities (ITU-T G.706 Annex B)
+
+    else:
+      # T1/J1 line
+      properties:
+        lantiq,frame-format:
+          $ref: /schemas/types.yaml#/definitions/string
+          enum: [4frame, 12frame, 24frame, 72frame]
+          default: 12frame
+          description: |
+            The T1/J1 line interface frame format
+              - 4frame: 4-frame multiframe format (F4)
+              - 12frame: 12-frame multiframe format (F12, D3/4)
+              - 24frame: 24-frame multiframe format (ESF)
+              - 72frame: 72-frame multiframe format (F72, remote switch mode)
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    pef2256@2000000 {
+      compatible = "lantiq,pef2256";
+      reg = <0x2000000 0xFF>;
+      interrupts = <8 1>;
+      interrupt-parent = <&PIC>;
+      clocks = <&clk_mclk>;
+      clock-names = "mclk";
+      reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+      lantiq,sysclk-rate-hz = <8192000>;
+      lantiq,data-rate-bps = <4096000>;
+
+      pinctrl {
+        pef2256_rpa_sypr: rpa-pins {
+          pins = "RPA";
+          function = "SYPR";
+        };
+        pef2256_xpa_sypx: xpa-pins {
+          pins = "XPA";
+          function = "SYPX";
+        };
+      };
+    };
Signature · 1 line
2.39.2
#9 lore raw

PATCH 2/7 drivers: misc: Add support for the Lantiq PEF2256 framer

In reply to Herve Codina

The Lantiq PEF2256 is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

Signed-off-by Herve Codina <[email protected]>
---
 drivers/misc/Kconfig    |   16 +
 drivers/misc/Makefile   |    1 +
 drivers/misc/pef2256.c  | 1441 +++++++++++++++++++++++++++++++++++++++
 include/linux/pef2256.h |   36 +
 4 files changed, 1494 insertions(+)
 create mode 100644 drivers/misc/pef2256.c
 create mode 100644 include/linux/pef2256.h
drivers/misc/Kconfig +16 -0
index 433aa4197785..b64f9435a51b 100644
@@ -376,6 +376,22 @@ config HMC6352
 	  This driver provides support for the Honeywell HMC6352 compass,
 	  providing configuration and heading data via sysfs.
 
+config PEF2256
+	tristate "Lantiq PEF2256 (FALC56) framer"
+	select PINCTRL
+	select PINMUX
+	select GENERIC_PINCONF
+	help
+	  This option enables support for the Lantiq PEF2256 framer, also known
+	  as FALC56. This framer and its line interface component is designed
+	  to fulfill all required interfacing between analog E1/T1/J1 lines and
+	  the digital PCM system highway.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pef2256.
+
 config DS1682
 	tristate "Dallas DS1682 Total Elapsed Time Recorder with Alarm"
 	depends on I2C
drivers/misc/Makefile +1 -0
index 56de43943cd5..a26f044ab9dd 100644
@@ -35,6 +35,7 @@ obj-$(CONFIG_SENSORS_TSL2550)	+= tsl2550.o
 obj-$(CONFIG_DS1682)		+= ds1682.o
 obj-$(CONFIG_C2PORT)		+= c2port/
 obj-$(CONFIG_HMC6352)		+= hmc6352.o
+obj-$(CONFIG_PEF2256)		+= pef2256.o
 obj-y				+= eeprom/
 obj-y				+= cb710/
 obj-$(CONFIG_VMWARE_BALLOON)	+= vmw_balloon.o
drivers/misc/pef2256.c new file +1441 -0

1,441 lines not on this page · raw message

include/linux/pef2256.h new file +36 -0
new file mode 100644
index 000000000000..6c8d173595b1
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * PEF2256 management
+ *
+ * Copyright 2023 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+#ifndef __PEF2256_H__
+#define __PEF2256_H__
+
+#include <linux/types.h>
+
+struct pef2256;
+struct device_node;
+struct device;
+struct notifier_block;
+
+struct pef2256 *pef2256_get_byphandle(struct device_node *np, const char *phandle_name);
+void pef2256_put(struct pef2256 *pef2256);
+struct pef2256 *devm_pef2256_get_byphandle(struct device *dev, struct device_node *np,
+					   const char *phandle_name);
+
+
+enum pef2256_event {
+	PEF2256_EVENT_CARRIER, /* Carrier state changed */
+};
+
+/* The nb.notifier_call function registered must not sleep */
+int pef2256_register_event_notifier(struct pef2256 *pef2256, struct notifier_block *nb);
+int pef2256_unregister_event_notifier(struct pef2256 *pef2256, struct notifier_block *nb);
+
+/* Retrieve carrier state. true: carrier on, false: carrier off */
+bool pef2256_get_carrier(struct pef2256 *pef2256);
+
+#endif /* __PEF2256_H__ */
Signature · 1 line
2.39.2
build bot
#10 lore raw

Re: [PATCH 2/7] drivers: misc: Add support for the Lantiq PEF2256 framer

Thank you for the patch! Perhaps something to improve:

Hi Herve,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on robh/for-next char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.3-rc2 next-20230315] [If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/167888778959.26.12757990479414568225%40mailman-core.alsa-project.org
patch subject: [PATCH 2/7] drivers: misc: Add support for the Lantiq PEF2256 framer
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230316/[email protected]/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0

reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/93791052da597151cddbe64bc3013d9fec19550f
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833 git checkout 93791052da597151cddbe64bc3013d9fec19550f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/misc/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> drivers/misc/pef2256.c:1054:38: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
    1054 | static const struct pinctrl_pin_desc const pef2256_v12_pins[] = {
         |                                      ^~~~~
   drivers/misc/pef2256.c:1065:38: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
    1065 | static const struct pinctrl_pin_desc const pef2256_v2x_pins[] = {
         |                                      ^~~~~

vim +/const +1054 drivers/misc/pef2256.c

1053

> 1054	static const struct pinctrl_pin_desc const pef2256_v12_pins[] = {

1055 PEF2256_PINCTRL_PIN(0, "RPA", PEF2256_PC1, PEF2256_12_PC_RPC_MASK),
1056 PEF2256_PINCTRL_PIN(1, "RPB", PEF2256_PC2, PEF2256_12_PC_RPC_MASK),
1057 PEF2256_PINCTRL_PIN(2, "RPC", PEF2256_PC3, PEF2256_12_PC_RPC_MASK),
1058 PEF2256_PINCTRL_PIN(3, "RPD", PEF2256_PC4, PEF2256_12_PC_RPC_MASK),
1059 PEF2256_PINCTRL_PIN(4, "XPA", PEF2256_PC1, PEF2256_12_PC_XPC_MASK),
1060 PEF2256_PINCTRL_PIN(5, "XPB", PEF2256_PC2, PEF2256_12_PC_XPC_MASK),
1061 PEF2256_PINCTRL_PIN(6, "XPC", PEF2256_PC3, PEF2256_12_PC_XPC_MASK),
1062 PEF2256_PINCTRL_PIN(7, "XPD", PEF2256_PC4, PEF2256_12_PC_XPC_MASK),
1063 };
1064

Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
build bot
#11 lore raw

Re: [PATCH 2/7] drivers: misc: Add support for the Lantiq PEF2256 framer

In reply to Herve Codina via Alsa-devel
Thank you for the patch! Yet something to improve:

Hi Herve,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on broonie-sound/for-next]
[also build test ERROR on robh/for-next char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.3-rc2 next-20230315] [If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/167888778959.26.12757990479414568225%40mailman-core.alsa-project.org
patch subject: [PATCH 2/7] drivers: misc: Add support for the Lantiq PEF2256 framer
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20230316/[email protected]/config)
compiler: s390-linux-gcc (GCC) 12.1.0

reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/93791052da597151cddbe64bc3013d9fec19550f
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833 git checkout 93791052da597151cddbe64bc3013d9fec19550f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>, old ones prefixed by <<):

ERROR: modpost: "devm_ioremap_resource" [drivers/dma/qcom/hdma.ko] undefined!
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/fsl-edma.ko] undefined!
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/idma64.ko] undefined!
ERROR: modpost: "iounmap" [drivers/tty/ipwireless/ipwireless.ko] undefined!
ERROR: modpost: "ioremap" [drivers/tty/ipwireless/ipwireless.ko] undefined!
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/char/xillybus/xillybus_of.ko] undefined!

>> ERROR: modpost: "devm_platform_ioremap_resource" [drivers/misc/pef2256.ko] undefined!

ERROR: modpost: "devm_memremap" [drivers/misc/open-dice.ko] undefined!
ERROR: modpost: "devm_memunmap" [drivers/misc/open-dice.ko] undefined!
ERROR: modpost: "iounmap" [drivers/net/ethernet/8390/pcnet_cs.ko] undefined!
WARNING: modpost: suppressed 16 unresolved symbol warnings because there were too many)

Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
#12 lore raw

PATCH 3/7 Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

In reply to Herve Codina

Document the "subordinate" sysfs attribute exposed by the pef2256 driver.

Signed-off-by Herve Codina <[email protected]>
---
 .../ABI/testing/sysfs-bus-platform-devices-pef2256     | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256 new file +10 -0
new file mode 100644
index 000000000000..b2343b3b6e84
@@ -0,0 +1,10 @@
+What:		/sys/bus/platform/devices/*.pef2256/subordinate
+KernelVersion:	6.4
+Contact:	Herve Codina <[email protected]>
+Description:
+		(RW) Controls whether the PEF2256 works as subordinate or main
+		device mode.
+		  - 0 : main device mode
+		  - 1 : subordinate mode
+		In subordinate device mode it synchronizes on line interface
+		clock signals. Otherwise, it synchronizes on internal clocks.
Signature · 1 line
2.39.2
build bot
#13 lore raw

Re: [PATCH 3/7] Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

Thank you for the patch! Perhaps something to improve:

Hi Herve,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on robh/for-next char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.3-rc2 next-20230316] [If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/167888779364.26.9200222608363841485%40mailman-core.alsa-project.org
patch subject: [PATCH 3/7] Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry
reproduce:
        # https://github.com/intel-lab-lkp/linux/commit/0140596e508d18933cd319314838bc802214b345
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Herve-Codina-via-Alsa-devel/drivers-misc-Add-support-for-the-Lantiq-PEF2256-framer/20230315-214833
        git checkout 0140596e508d18933cd319314838bc802214b345
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        make htmldocs

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256:2: WARNING: Unexpected indentation.
>> Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256:2: WARNING: Block quote ends without a blank line; unexpected unindent.

vim +2 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256

   > 2	KernelVersion:	6.4
Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
#14 lore raw

PATCH 4/7 MAINTAINERS: Add the Lantiq PEF2256 driver entry

In reply to Herve Codina

After contributing the driver, add myself as the maintainer for the Lantiq PEF2256 driver.

Signed-off-by Herve Codina <[email protected]>
---
 MAINTAINERS | 8 ++++++++
 1 file changed, 8 insertions(+)
MAINTAINERS +8 -0
index fcb69242cd19..b258498aa8ac 100644
@@ -11651,6 +11651,14 @@ S:	Maintained
 F:	arch/mips/lantiq
 F:	drivers/soc/lantiq
 
+LANTIQ PEF2256 DRIVER
+M:	Herve Codina <[email protected]>
+S:	Maintained
+F:	Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
+F:	Documentation/devicetree/bindings/misc/lantiq,pef2256.yaml
+F:	drivers/misc/pef2256.c
+F:	include/linux/pef2256.h
+
 LASI 53c700 driver for PARISC
 M:	"James E.J. Bottomley" <[email protected]>
 L:	[email protected]
Signature · 1 line
2.39.2
#15 lore raw

PATCH 5/7 dt-bindings: sound: Add support for the Lantiq PEF2256 codec

In reply to Herve Codina

The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

The codec support allows to use some of the PCM system highway time-slots as audio channels to transport audio data over the E1/T1/J1 lines.

Signed-off-by Herve Codina <[email protected]>
---
 .../bindings/sound/lantiq,pef2256-codec.yaml  | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml new file +57 -0
new file mode 100644
index 000000000000..acba3a0ccd1b
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/lantiq,pef2256-codec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq PEF2256 codec device
+
+maintainers:
+  - Herve Codina <[email protected]>
+
+description: |
+  Codec support for PEF2256.
+
+  The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and
+  line interface component designed to fulfill all required interfacing between
+  an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.
+
+  The codec support allows to use some of the PCM system highway time-slots as
+  audio channels to transport audio data over the E1/T1/J1 lines.
+
+  The time-slots used by the codec must be set and so, the properties
+  'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and
+  'dai-tdm-slot-rx-mask' must be present in the ALSA sound card node for
+  sub-nodes that involve the codec. The codec uses 8bit time-slots.
+  'dai-tdm-tdm-slot-with' must be set to 8.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: lantiq,pef2256-codec
+
+  lantiq,pef2256:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandle to the PEF2256
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - lantiq,pef2256
+  - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    audio-codec {
+        compatible = "lantiq,pef2256-codec";
+        lantiq,pef2256 = <&pef2256>;
+        #sound-dai-cells = <0>;
+    };
Signature · 1 line
2.39.2
#16 lore raw

PATCH 6/7 ASoC: codecs: Add support for the Lantiq PEF2256 codec

In reply to Herve Codina

The Lantiq PEF2256, also known as Infineon PEF2256 or FALC256, is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.

The codec support allows to use some of the PCM system highway time-slots as audio channels to transport audio data over the E1/T1/J1 lines. It provides also line carrier detection events reported through the ALSA jack detection feature.

Signed-off-by Herve Codina <[email protected]>
---
 sound/soc/codecs/Kconfig         |  14 ++
 sound/soc/codecs/Makefile        |   2 +
 sound/soc/codecs/pef2256-codec.c | 395 +++++++++++++++++++++++++++++++
 3 files changed, 411 insertions(+)
 create mode 100644 sound/soc/codecs/pef2256-codec.c
sound/soc/codecs/Kconfig +14 -0
index 0be061953e9a..bec4f9200072 100644
@@ -168,6 +168,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_PCM512x_I2C
 	imply SND_SOC_PCM512x_SPI
 	imply SND_SOC_PEB2466
+	imply SND_SOC_PEF2256
 	imply SND_SOC_RK3328
 	imply SND_SOC_RK817
 	imply SND_SOC_RT274

@@ -1252,6 +1253,19 @@ config SND_SOC_PEB2466
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-soc-peb2466.
 
+config SND_SOC_PEF2256
+	tristate "Lantiq PEF2256 codec"
+	depends on PEF2256
+	help
+	  Enable support for the Lantiq PEF2256 (FALC56) codec.
+	  The PEF2256 is a framer and line interface between analog E1/T1/J1
+	  line and a digital PCM bus.
+	  This codec allows to use some of the time slots available on the
+	  PEF2256 PCM bus to transport some audio data.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-soc-pef2256.
+
 config SND_SOC_RK3328
 	tristate "Rockchip RK3328 audio CODEC"
 	select REGMAP_MMIO
sound/soc/codecs/Makefile +2 -0
index 20b388b77f1f..11bd66d46f7b 100644
@@ -188,6 +188,7 @@ snd-soc-pcm512x-objs := pcm512x.o
 snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o
 snd-soc-pcm512x-spi-objs := pcm512x-spi.o
 snd-soc-peb2466-objs := peb2466.o
+snd-soc-pef2256-objs := pef2256-codec.o
 snd-soc-rk3328-objs := rk3328_codec.o
 snd-soc-rk817-objs := rk817_codec.o
 snd-soc-rl6231-objs := rl6231.o

@@ -551,6 +552,7 @@ obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
 obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o
 obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
 obj-$(CONFIG_SND_SOC_PEB2466)	+= snd-soc-peb2466.o
+obj-$(CONFIG_SND_SOC_PEF2256)	+= snd-soc-pef2256.o
 obj-$(CONFIG_SND_SOC_RK3328)	+= snd-soc-rk3328.o
 obj-$(CONFIG_SND_SOC_RK817)	+= snd-soc-rk817.o
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
sound/soc/codecs/pef2256-codec.c new file +395 -0

395 lines not on this page · raw message

Signature · 1 line
2.39.2
#17 lore raw

PATCH 7/7 MAINTAINERS: Add the Lantiq PEF2256 ASoC codec entry

In reply to Herve Codina

After contributing the codec, add myself as the maintainer for the Lantiq PEF2256 codec.

Signed-off-by Herve Codina <[email protected]>
---
 MAINTAINERS | 7 +++++++
 1 file changed, 7 insertions(+)
MAINTAINERS +7 -0
index b258498aa8ac..81c17580b402 100644
@@ -11651,6 +11651,13 @@ S:	Maintained
 F:	arch/mips/lantiq
 F:	drivers/soc/lantiq
 
+LANTIQ PEF2256 ASoC CODEC
+M:	Herve Codina <[email protected]>
+L:	[email protected] (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
+F:	sound/soc/codecs/pef2256-codec.c
+
 LANTIQ PEF2256 DRIVER
 M:	Herve Codina <[email protected]>
 S:	Maintained
Signature · 1 line
2.39.2